438891145253 has 4 divisors (see below), whose sum is σ = 478790340288. Its totient is φ = 398991950220.

The previous prime is 438891145211. The next prime is 438891145271. The reversal of 438891145253 is 352541198834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438891145253 - 2¹⁶ = 438891079717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 438891145195 and 438891145204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438891145453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19949597501 + ... + 19949597522.

It is an arithmetic number, because the mean of its divisors is an integer number (119697585072).

Almost surely, 2^438891145253 is an apocalyptic number.

It is an amenable number.

438891145253 is a deficient number, since it is larger than the sum of its proper divisors (39899195035).

438891145253 is a wasteful number, since it uses less digits than its factorization.

438891145253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39899195034.

The product of its digits is 4147200, while the sum is 53.

The spelling of 438891145253 in words is "four hundred thirty-eight billion, eight hundred ninety-one million, one hundred forty-five thousand, two hundred fifty-three".